/* ============================================
   Orbitia V2 — Shared Design System
   Used by blog index and post pages
   ============================================ */

:root {
  --bg: oklch(0.14 0.018 270);
  --bg-elev: oklch(0.18 0.018 270);
  --bg-elev-2: oklch(0.22 0.018 270);
  --paper: oklch(0.20 0.018 270);
  --ink: oklch(0.97 0.008 90);
  --ink-2: oklch(0.78 0.008 90);
  --ink-3: oklch(0.55 0.012 90);
  --line: oklch(0.28 0.018 270);
  --line-2: oklch(0.24 0.018 270);
  --accent: oklch(0.72 0.18 255);
  --accent-2: oklch(0.78 0.16 295);
  --accent-soft: oklch(0.3 0.1 255);
  --green: oklch(0.78 0.18 155);
  --green-soft: oklch(0.3 0.08 155);
  --warm: oklch(0.82 0.14 70);
  --warm-soft: oklch(0.3 0.08 70);
  --display: 'Space Grotesk', system-ui, sans-serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --serif: 'IBM Plex Serif', Georgia, serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --maxw: 1280px;
  --maxw-read: 760px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
body {
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 20% 0%, oklch(0.25 0.12 270 / 0.5), transparent 50%),
    radial-gradient(circle at 90% 30%, oklch(0.25 0.14 295 / 0.35), transparent 45%);
  background-attachment: fixed;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
.wrap-read { max-width: var(--maxw-read); margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
@media (max-width: 720px) { .wrap, .wrap-read { padding: 0 20px; } }

/* Star background */
.stars {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, white, transparent),
    radial-gradient(1px 1px at 60% 70%, white, transparent),
    radial-gradient(1px 1px at 80% 20%, white, transparent),
    radial-gradient(1.5px 1.5px at 30% 80%, white, transparent),
    radial-gradient(1px 1px at 90% 50%, white, transparent),
    radial-gradient(1px 1px at 40% 50%, white, transparent),
    radial-gradient(1px 1px at 70% 90%, white, transparent),
    radial-gradient(1px 1px at 10% 60%, white, transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, white, transparent);
  background-size: 100% 100%; opacity: 0.4;
  animation: twinkle 8s ease-in-out infinite;
}
@keyframes twinkle { 0%, 100% { opacity: 0.25; } 50% { opacity: 0.5; } }

/* ============== NAV ============== */
nav.top {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line-2);
}
nav.top .row { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { display: flex; align-items: center; gap: 12px; font-family: var(--display); font-size: 22px; font-weight: 600; letter-spacing: -0.01em; color: var(--ink); }
.logo img.mark { width: 34px; height: 30px; flex-shrink: 0; display: block; filter: drop-shadow(0 0 12px oklch(0.72 0.18 255 / 0.45)); }
nav.top ul { list-style: none; display: flex; gap: 28px; font-size: 14px; color: var(--ink-2); }
nav.top ul a:hover { color: var(--accent); }
nav.top ul a.active { color: var(--accent); }
@media (max-width: 760px) { nav.top ul { display: none; } }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-size: 14px; font-weight: 500;
  transition: all .25s ease; line-height: 1; font-family: var(--sans);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: oklch(0.13 0.02 270); font-weight: 600;
  box-shadow: 0 4px 24px -8px var(--accent);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 32px -8px var(--accent); }
.btn-ghost { color: var(--ink); border: 1px solid var(--line); background: oklch(0.2 0.018 270 / 0.5); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-lg { padding: 16px 26px; font-size: 15px; }

/* ============== HEADINGS ============== */
.kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px; display: flex; align-items: center; gap: 12px;
}
.kicker::before { content: ''; width: 24px; height: 1px; background: var(--accent); }

h1.display { font-family: var(--display); font-size: clamp(40px, 5.4vw, 84px); line-height: 0.98; letter-spacing: -0.03em; font-weight: 500; }
h1.display em, h2 em { font-style: normal; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-family: var(--display); font-size: clamp(32px, 4vw, 56px); line-height: 1; letter-spacing: -0.03em; font-weight: 500; }
h3 { font-family: var(--display); font-weight: 500; }

/* ============== POST CARD ============== */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 980px) { .posts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .posts-grid { grid-template-columns: 1fr; } }

.post-card {
  background: oklch(0.18 0.018 270 / 0.6); border: 1px solid var(--line-2); border-radius: 18px;
  overflow: hidden; transition: all .35s ease;
  display: flex; flex-direction: column; backdrop-filter: blur(10px);
  position: relative;
}
.post-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 30px 60px -30px oklch(0.05 0.02 270 / 0.6); }
.post-card .visual {
  aspect-ratio: 16 / 9; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
}
.post-card .visual.kind-articulo { background: linear-gradient(135deg, oklch(0.22 0.05 255), oklch(0.18 0.04 240)); }
.post-card .visual.kind-conversacion { background: linear-gradient(135deg, oklch(0.22 0.05 160), oklch(0.18 0.04 180)); }
.post-card .visual.kind-caso { background: linear-gradient(135deg, oklch(0.22 0.06 295), oklch(0.18 0.05 320)); }
.post-card .visual .glyph {
  font-family: var(--display); font-size: 88px; font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: 0.85;
}
.post-card .visual .kind-pill {
  position: absolute; top: 14px; left: 14px;
  padding: 5px 10px; border-radius: 6px;
  background: var(--bg-elev); border: 1px solid var(--line);
  font-family: var(--mono); font-size: 10.5px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--ink);
}
.post-card .visual .kind-pill .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.post-card .visual.kind-articulo .kind-pill .dot { background: var(--accent); }
.post-card .visual.kind-conversacion .kind-pill .dot { background: var(--green); }
.post-card .visual.kind-caso .kind-pill .dot { background: var(--accent-2); }

.post-card .body { padding: 22px 22px 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.post-card .meta { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.08em; text-transform: uppercase; display: flex; gap: 14px; }
.post-card .meta span { display: flex; align-items: center; gap: 6px; }
.post-card h3 { font-size: 22px; line-height: 1.15; letter-spacing: -0.015em; }
.post-card p { font-size: 14px; line-height: 1.5; color: var(--ink-2); flex: 1; }
.post-card .read {
  font-family: var(--mono); font-size: 12px; color: var(--accent);
  display: inline-flex; align-items: center; gap: 6px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.post-card .read::after { content: '→'; transition: transform .25s; }
.post-card:hover .read::after { transform: translateX(4px); }

/* ============== BLOG INDEX ============== */
.blog-hero { padding: 80px 0 60px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.filter {
  padding: 10px 16px; border-radius: 10px; font-size: 13.5px;
  border: 1px solid var(--line); background: oklch(0.2 0.018 270 / 0.4); color: var(--ink-2);
  transition: all .2s; display: flex; align-items: center; gap: 8px;
}
.filter:hover { border-color: var(--accent); color: var(--ink); }
.filter.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: oklch(0.12 0.02 270); border-color: transparent; font-weight: 600; }
.filter .count { font-family: var(--mono); font-size: 11px; opacity: 0.7; }

/* ============== ARTICLE PAGE ============== */
article.post { padding: 60px 0 40px; }
.post-header { max-width: var(--maxw-read); margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .post-header { padding: 0 20px; } }
.post-header .breadcrumb {
  font-family: var(--mono); font-size: 12px; color: var(--ink-3);
  letter-spacing: 0.06em; margin-bottom: 24px;
  display: flex; gap: 8px; align-items: center;
}
.post-header .breadcrumb a:hover { color: var(--accent); }
.post-header .pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: oklch(0.2 0.018 270 / 0.7); border: 1px solid var(--line);
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-2);
  margin-bottom: 22px;
}
.post-header .pill .dot { width: 7px; height: 7px; border-radius: 50%; }
.post-header .pill.articulo .dot { background: var(--accent); }
.post-header .pill.conversacion .dot { background: var(--green); }
.post-header .pill.caso .dot { background: var(--accent-2); }

.post-header h1 {
  font-family: var(--display); font-size: clamp(34px, 4.4vw, 60px);
  line-height: 1.02; letter-spacing: -0.025em; font-weight: 500;
}
.post-header .lede {
  margin-top: 24px; font-size: 19px; line-height: 1.55; color: var(--ink-2);
  font-family: var(--serif);
}
.post-meta {
  margin-top: 28px; padding: 16px 0; border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2);
  display: flex; align-items: center; gap: 24px; font-size: 13px; color: var(--ink-3);
  font-family: var(--mono); letter-spacing: 0.05em;
}
.post-meta .author { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.post-meta .author .av {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-size: 13px; font-weight: 600; color: oklch(0.13 0.02 270);
}

.post-body { max-width: var(--maxw-read); margin: 0 auto; padding: 48px 32px 0; }
@media (max-width: 720px) { .post-body { padding: 40px 20px 0; } }
.post-body p, .post-body ul, .post-body ol, .post-body blockquote, .post-body h2, .post-body h3 { margin-bottom: 22px; }
.post-body p { font-size: 17.5px; line-height: 1.7; color: var(--ink); font-family: var(--serif); }
.post-body p strong { color: var(--ink); font-weight: 600; }
.post-body p em { color: var(--accent); font-style: italic; }
.post-body h2 { font-family: var(--display); font-size: 28px; line-height: 1.15; letter-spacing: -0.02em; margin-top: 48px; margin-bottom: 18px; font-weight: 500; }
.post-body h3 { font-family: var(--display); font-size: 21px; line-height: 1.2; letter-spacing: -0.015em; margin-top: 36px; margin-bottom: 14px; font-weight: 500; color: var(--ink); }
.post-body ul, .post-body ol { padding-left: 24px; font-family: var(--serif); }
.post-body ul li, .post-body ol li { font-size: 17px; line-height: 1.7; margin-bottom: 10px; color: var(--ink); }
.post-body ul li::marker { color: var(--accent); }
.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 14px 0 14px 24px;
  font-family: var(--display); font-size: 22px; line-height: 1.4; letter-spacing: -0.01em;
  font-weight: 500; color: var(--ink);
  font-style: normal;
}
.post-body blockquote cite { display: block; margin-top: 10px; font-size: 13px; color: var(--ink-3); font-family: var(--mono); font-style: normal; letter-spacing: 0.06em; }

.post-body figure {
  margin: 36px 0; padding: 0;
}
.post-body figure img { border-radius: 12px; border: 1px solid var(--line); }
.post-body figcaption { margin-top: 12px; font-family: var(--mono); font-size: 12px; color: var(--ink-3); text-align: center; letter-spacing: 0.05em; }

.callout-box {
  margin: 32px 0; padding: 22px 24px;
  background: oklch(0.2 0.018 270 / 0.5); border: 1px solid var(--line-2);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
}
.callout-box .lab { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.callout-box p { font-family: var(--sans); font-size: 15px; line-height: 1.55; color: var(--ink); margin: 0; }

/* Stat row for case studies */
.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin: 32px 0;
}
@media (max-width: 640px) { .stat-row { grid-template-columns: 1fr; } }
.stat-row .stat {
  padding: 22px 20px;
  background: oklch(0.2 0.018 270 / 0.6); border: 1px solid var(--line-2);
  border-radius: 14px;
}
.stat-row .stat .v {
  font-family: var(--display); font-size: 44px; line-height: 1; letter-spacing: -0.03em; font-weight: 500;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-row .stat .l { margin-top: 8px; font-size: 12.5px; font-family: var(--mono); color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.08em; }

/* Chat transcript (for conversación posts) */
.transcript {
  margin: 32px 0;
  background: oklch(0.18 0.018 270 / 0.7); border: 1px solid var(--line-2);
  border-radius: 16px; padding: 22px; backdrop-filter: blur(10px);
}
.transcript .head {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 14px; margin-bottom: 16px;
  border-bottom: 1px solid var(--line-2);
}
.transcript .av {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-size: 14px; font-weight: 600; color: oklch(0.13 0.02 270);
}
.transcript .head .info .nm { font-family: var(--display); font-weight: 500; font-size: 15px; }
.transcript .head .info .sub { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.08em; text-transform: uppercase; }
.transcript .head .live { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--green); letter-spacing: 0.08em; text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
.transcript .head .live::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px var(--green-soft); }

.transcript .messages { display: flex; flex-direction: column; gap: 8px; }
.transcript .msg {
  max-width: 78%; padding: 11px 14px; border-radius: 14px;
  font-size: 14.5px; line-height: 1.45; font-family: var(--sans);
}
.transcript .msg.them { background: oklch(0.22 0.018 270); color: var(--ink); align-self: flex-start; border-bottom-left-radius: 4px; }
.transcript .msg.us { background: oklch(0.32 0.06 160); color: white; align-self: flex-end; border-bottom-right-radius: 4px; }
.transcript .msg .time { display: block; font-size: 11px; opacity: 0.6; margin-top: 4px; text-align: right; font-family: var(--mono); }
.transcript .label {
  align-self: center; padding: 4px 12px; border-radius: 999px;
  background: oklch(0.22 0.018 270); border: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; color: var(--ink-3);
  letter-spacing: 0.08em; text-transform: uppercase;
  margin: 6px 0;
}

.annotation {
  margin: 20px 0; padding: 14px 16px;
  background: oklch(0.22 0.05 255 / 0.25); border: 1px solid var(--accent-soft);
  border-radius: 10px;
  display: flex; gap: 12px; align-items: flex-start;
}
.annotation .num {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: oklch(0.13 0.02 270);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 12px; font-weight: 600;
}
.annotation .text { font-size: 14px; line-height: 1.55; color: var(--ink); font-family: var(--sans); }
.annotation .text b { color: var(--accent); font-weight: 600; }

/* Post footer / next steps */
.post-cta {
  max-width: var(--maxw-read); margin: 60px auto 0; padding: 0 32px;
}
@media (max-width: 720px) { .post-cta { padding: 0 20px; } }
.post-cta-box {
  background: linear-gradient(135deg, oklch(0.2 0.05 270), oklch(0.25 0.1 295));
  border: 1px solid var(--line); border-radius: 20px;
  padding: 36px 32px; position: relative; overflow: hidden;
}
.post-cta-box::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent), transparent 70%);
  opacity: 0.25; pointer-events: none;
}
.post-cta-box h3 { font-family: var(--display); font-size: 28px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; }
.post-cta-box p { margin-top: 14px; font-size: 16px; line-height: 1.55; color: var(--ink-2); }
.post-cta-box .row { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }

/* Related posts */
.related { max-width: var(--maxw); margin: 80px auto 0; padding: 0 32px; }
@media (max-width: 720px) { .related { padding: 0 20px; } }
.related h4 {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 20px;
  display: flex; align-items: center; gap: 12px;
}
.related h4::before { content: ''; width: 24px; height: 1px; background: var(--ink-3); }

/* ============== FOOTER ============== */
footer.site-foot { padding: 56px 0 40px; border-top: 1px solid var(--line-2); margin-top: 80px; }
footer.site-foot .row { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
footer.site-foot .copy { color: var(--ink-3); font-size: 12.5px; font-family: var(--mono); }
footer.site-foot .links { display: flex; gap: 28px; font-size: 13.5px; color: var(--ink-2); }
footer.site-foot .links a:hover { color: var(--accent); }